/Engine/Source/Runtime/Engine/Classes/GameFramework/GameModeBase.h
Customize incoming player based on URL options
virtual [FString](API\Runtime\Core\Containers\FString) InitNewPlayer ( [APlayerController](API\Runtime\Engine\GameFramework\APlayerController) * NewPlayerController, const [FUniqueNetIdRepl](API\Runtime\Engine\GameFramework\FUniqueNetIdRepl) & UniqueId, const [FString](API\Runtime\Core\Containers\FString) & Options, const [FString](API\Runtime\Core\Containers\FString) & Portal )